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tr2: make process info collection platform-generic

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To pave the way for non-Windows platforms to define
trace2_collect_process_info(), reorganize the stub-or-definition schema
to something which doesn't directly reference Windows.

Platforms which want to collect parent process information in the
future should:

 1. Add an implementation to compat/ (e.g. compat/somearch/procinfo.c)
 2. Add that object to COMPAT_OBJS to config.mak.uname
    (e.g. COMPAT_OBJS += compat/somearch/procinfo.o)
 3. Define HAVE_PLATFORM_PROCINFO in config.mak.uname

In the Windows case, this definition lives in
compat/win32/trace2_win32_process_info.c, which is already conditionally
added to COMPAT_OBJS; so let's add HAVE_PLATFORM_PROCINFO to hint to the
build that compat/stub/procinfo.c should not be used.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Emily Shaffer
2021-07-21 18:27:06 -07:00
committed by Junio C Hamano
parent 107691cb07
commit b7e6a41622
4 changed files with 16 additions and 6 deletions
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11
compat/stub/procinfo.c Normal file
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@ -0,0 +1,11 @@
#include "git-compat-util.h"
#include "trace2.h"
/*
* Stub. See sample implementations in compat/linux/procinfo.c and
* compat/win32/trace2_win32_process_info.c.
*/
void trace2_collect_process_info(enum trace2_process_info_reason reason)
{
}